What Are Shares In A Business And How Do They Work?

If you’re running (or planning) a limited company in the UK, you’ll hear a lot about “shares”, “shareholders” and “equity”. But what do shares in a business actually represent, how do they work day-to-day, and what legal steps do you need to take when you issue or transfer them?

In this guide, we’ll break down shares in simple terms, show you how they shape control and profit within a company, and walk through the key legal documents, compliance steps and best practices so you’re protected from day one.

What Are Shares In A UK Business?

Shares are units of ownership in a limited company. If your company has 100 shares, and you own 60, you own 60% of the business.

Owning shares usually gives a shareholder two main things:

• A right to profits (dividends) if and when they’re declared
• A say in major decisions (voting rights), usually proportionate to their shareholding

Shares also influence who gets what if the company is wound up (e.g. after paying debts). They’re the backbone of how control, risk and reward are split between founders, investors and team members.

Legally, shares sit at the heart of the Companies Act 2006, your company’s constitution (the Articles of Association), and any private contracts between owners (for example, a Shareholders Agreement). These set out what types of shares you can issue, what rights they carry and how decisions are made.

How Do Shares Work In A Limited Company?

Most small businesses start simple: ordinary shares with one vote per share and equal rights to dividends. But as you grow, you’ll make decisions that affect your cap table (who owns what), like issuing new shares to bring in investment or transferring shares when a founder exits.

Share Capital And Ownership

When you incorporate, you create “issued share capital” by issuing a certain number of shares to the first owners (often the founders). From there, you can:

• Issue more shares to new or existing shareholders (which dilutes existing percentages)
• Transfer existing shares between shareholders (ownership changes hands, total share count stays the same)
• Buy back or redeem shares (reduces share count, often used to tidy up your cap table)

The Companies Act 2006 requires you to keep statutory registers (including a register of members) and to file certain forms at Companies House when you change your share capital.

Decision-Making And Voting

Shareholders typically vote on big-ticket issues like changing the constitution, approving share buybacks, appointing directors, or selling the business. Day-to-day operations are handled by directors.

Your voting rules and thresholds (ordinary or special resolutions) will come from the Companies Act and your Articles. Many SMEs add a private contract between owners – a Shareholders Agreement – to cover what happens if someone leaves, what decisions require unanimous consent, and how disputes are resolved.

Dividends And Profits

Dividends are distributions of profit, declared by the board when the company has sufficient distributable reserves. Not all shares must have the same right to dividends – you can tailor this through your share classes and Articles.

Common Types Of Shares And What They Mean

You’re not stuck with a one-size-fits-all structure. UK companies can create different share classes to reflect different rights, provided they’re set out in the Articles (and properly authorised by the shareholders).

Ordinary Shares

The standard. Usually one vote per share, full rights to dividends, and a pro-rata share on a winding up. Great for founders and general ownership.

Non-Voting Or Restricted Voting Shares

These may have dividend rights but limited or no voting rights. Sometimes used for employee equity where you want participation in upside without shifting control.

Preference Shares

Investors sometimes ask for preferential dividend rights (e.g. paid before ordinary dividends) or priority on a winding up. They can also be cumulative or carry other negotiated features.

Redeemable Shares

These can be bought back (redeemed) by the company on set terms. Useful when you want a predefined exit for certain holders, subject to strict Companies Act rules on buybacks and capital maintenance.

Before adopting or changing share classes, review your Articles and consider a tailored Articles of Association update so the rights are crystal clear and enforceable.

Issuing, Transferring And Buying Back Shares: The Practical Steps

Here’s what the lifecycle of shares typically looks like and the steps you need to follow to stay compliant.

1) Issuing New Shares (Allotment)

Issuing new shares increases the company’s total share capital and usually dilutes existing percentages unless everyone participates.

Key steps often include:

• Check authority to allot: ensure directors are authorised under the Articles or by shareholder resolution
• Pre-emption rights: confirm whether existing shareholders have first refusal on new shares
• Agree terms: price per share, class of shares, investor rights
• Paperwork: board minutes, subscription letter, and Companies House filings (e.g. Form SH01)
• Payment & issue: receive funds, update your register of members and issue share certificates

For formalising the investment terms, many SMEs use a Share Subscription Agreement. If you’re very early-stage and want a simpler instrument, consider an Advanced Subscription Agreement or a SAFE Note to defer valuation until a future round.

Thinking through who gets what from day one can save headaches later – this is where a robust Shareholders Agreement is invaluable.

2) Transferring Existing Shares

A transfer moves shares from one holder to another without changing the total number of shares.

Key steps often include:

• Check restrictions in the Articles or Shareholders Agreement (e.g. right of first refusal)
• Agree price and terms between seller and buyer (often via a Share Sale Agreement)
• Complete stock transfer form and handle any stamp duty (generally 0.5% where due)
• Board approval if required, then update the register of members and issue new share certificates

Don’t forget statutory filings and any necessary disclosures after material changes in ownership, including updates to persons with significant control.

3) Buying Back Or Redeeming Shares

A share buyback is when the company purchases its own shares from shareholders. It’s tightly regulated and needs careful planning and documentation (board and shareholder approvals, solvency considerations, and Companies House filings such as SH03/SH06 in the appropriate scenarios).

It’s a useful tool to tidy up your cap table after a founder exit or to return capital. If this is on your roadmap, read up on a compliant share buyback process before you start.

The Essential Legal Documents And Records

Strong paperwork protects relationships and reduces disputes. At a minimum, consider the following.

Articles Of Association

Your Articles are the company’s rulebook. They set out share classes, rights, decision-making processes, director powers, and transfer restrictions. If you plan multiple share classes or investor rights, make sure your Articles of Association are tailored to your business, not just the incorporation default.

Shareholders Agreement

This private contract between owners covers things the Articles don’t do well, like founder vesting, leaver provisions, drag/tag rights, information rights, dispute resolution and exit planning. A well-drafted Shareholders Agreement is one of the best investments you can make to protect the business and the founding team relationship.

Investment Documents

• Share Subscription Agreement (for priced equity rounds)
• Advanced Subscription Agreement (investment that converts into shares later)
• SAFE Note (a popular alternative to ASAs in early-stage deals)

Registers And Share Certificates

Keep your statutory register of members up to date and issue certificates promptly when shares are allotted or transferred. There are specific rules and good practices around share certificates and member registers that you’ll want to follow to avoid disputes and delays in future deals.

EMI And Employee Equity

If you’re using options to reward and retain your team, ensure your plan is compliant and tax-efficient, and that your valuation and vesting mechanics are documented carefully. EMI options can be a powerful tool when set up properly.

Compliance, Tax And Filing Obligations To Keep On Your Radar

Share movements come with legal and tax responsibilities. Here are the big-ticket items most small companies should consider.

Companies House Filings

• Allotment of shares: file SH01 within the deadline
• Share buybacks/redemptions: ensure the correct approvals, filings (e.g. SH03/SH06) and capital treatment
• Annual confirmation statement: keep your cap table current

Missing deadlines can lead to penalties, administrative hassle and poor investor confidence.

Stamp Duty And SDRT

Transfers of shares may attract Stamp Duty or SDRT (generally 0.5% of the consideration, rounded up to the nearest £5). Rules vary depending on how the transfer is executed. Before completing a deal, it’s wise to understand the stamp duty on shares that may apply.

Persons With Significant Control (PSC)

You must keep your PSC register up to date and report changes. If someone controls more than 25% of shares or voting rights (or otherwise exercises significant influence), they’ll likely be a PSC. Learn the basics of PSC obligations so you stay compliant.

EMI And Valuations

For EMI options, HMRC has specific valuation and notification rules. You’ll often hear terms like UMV (Unrestricted Market Value) in this context. Getting your valuation right up front reduces tax risk and employee headaches later.

Dividends And Distributable Reserves

Dividends can only be paid out of distributable profits. Make sure your bookkeeping is accurate and the board approves dividends correctly. Paying unlawful dividends can lead to director liability.

Using Shares Strategically: Growth, Incentives And Risk Management

Shares are more than ownership units – they’re a strategic tool. Here’s how small companies use them to grow and protect value.

Attracting Investment Without Losing Control

You can structure share classes, voting rights and reserved matters so you raise capital while keeping key decisions in founder hands. A tailored set of Articles and a balanced Shareholders Agreement will help you strike the right deal.

Employee Equity And Retention

Equity can be a powerful incentive, but it needs discipline. Many companies prefer options over shares at early stage to avoid cap table clutter and to link vesting to tenure or performance. Explore EMI options if you want a tax-efficient, HMRC-backed scheme for UK employees.

Founder Vesting And Leaver Provisions

Imagine a co-founder leaves after six months. Without vesting, they might keep a large chunk of equity permanently. With vesting and leaver provisions, unvested shares can be bought back or forfeited, preventing dead equity from blocking future rounds. A clear vesting schedule (often 3–4 years with a cliff) is standard practice.

Managing Dilution Over Time

Every new share issue dilutes existing ownership. That’s not always a bad thing – if the capital fuels growth, the pie gets bigger. But manage it intentionally. Build in pre-emption rights, track your cap table and keep an eye on investor protections. For a deeper dive, read about share dilution and common mitigation strategies.

Clean Records Drive Faster Deals

When an investor or buyer runs diligence, gaps in registers, messy certificates or unclear Articles can stall or sink a deal. Keeping accurate records and having tidy contracts means you can move quickly when opportunity knocks.

Practical FAQs We Hear From Small Business Owners

Do I Have To Use The Model Articles?

No. Model Articles are a starting point, but most companies outgrow them quickly. If you plan to raise investment or introduce multiple share classes, get your Articles of Association reviewed and tailored.

Can I Just Issue More Shares To Myself Later?

You need authority to allot and to respect pre-emption rights (if any). Even if you control the company, follow proper process, pass resolutions, file SH01 and update your registers. Cutting corners creates risk and can invalidate the allotment.

How Do I Sell My Shares If I Want To Exit?

First, check transfer restrictions in your Articles and Shareholders Agreement. If a sale is permitted, agree terms in a Share Sale Agreement, handle any stamp duty and ensure the board approves the transfer if required. Always update your statutory records.

What’s The Easiest Way To Bring In A Small Investor?

For small cheques, some founders prefer an ASA or SAFE to defer valuation and paperwork until a larger priced round. If you’re ready for a priced round, use a Share Subscription Agreement and make sure pre-emption and class rights are considered.

Do I Need Paper Certificates?

Yes, UK private companies typically issue share certificates, and you must keep your register of members up to date. Poor records are a common due diligence red flag, so follow best practice around certificates and registers.

Can The Company Buy Back A Departing Founder’s Shares?

Often yes, subject to capital maintenance rules, shareholder approvals, filings and the terms in your Articles and Shareholders Agreement. Start by mapping a compliant buyback process before agreeing any price or timetable.

Key Takeaways

• Shares are units of ownership that drive control and profit in a limited company – your Articles and any Shareholders Agreement decide who gets a vote, dividends and what happens on exit.
• Choose the right share classes for your goals. Ordinary, preference, non-voting and redeemable shares each carry different rights – make sure your Articles reflect exactly what you intend.
• When issuing, transferring or buying back shares, follow proper process: approvals, contracts, filings, registers and certificates. Cutting corners creates legal and tax risk.
• Keep on top of compliance: Companies House filings, stamp duty/SDRT on transfers, PSC updates and lawful dividend rules all matter for small businesses.
• Use equity strategically. Plan for investment, manage dilution thoughtfully, and consider EMI options to reward your team without derailing control.
• Strong documentation and clean records make fundraising and exits faster. Tailored Articles, a clear Shareholders Agreement and accurate registers are essential.

If you’d like help setting up your share structure, drafting investment or founder documents, or getting your records in order, you can reach us on 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.